The king suspects that his goldsmith has cheated him and his new crown isn’t really made of pure gold. Can Archimedes help determine what the crown is made of without smashing it apart?

In this video, you'll learn important phrases and words to describe people. Eylin also tells you what kinds of guys she was attracted to in her early 20s!

In this video, you will learn what a gnomon was used for, who Euclid and Eratosthenes were, and what secret Archimedes thinks he discovered after his apprenticeship with Euclid.

How does luggage get onto the plane? AKTIV has tracked the route taken by trolleys and bags in Terminal 2 at Munich Airport. The underground track is 45 kilometers long!

Ancient Greece was home to many great thinkers, such as the physician Hippocrates, the philosopher Socrates, the sculptor Phidias, and the mathematician Archimedes.

In Part 2, you'll get to know more gemstones and learn about their origin and uses, as well as the properties that are attributed to some of them.

Adalbert's mother thought it was a good idea to give the children a chemistry set – that is, something educational — to play with. But her plan backfires when Nick and Adalbert end up causing quite a bit of trouble!

In this humorous video, you can see a mother's solution to her children constantly bickering about who has more. Little do they know, it will remain part of their lives well past childhood...

Drivers are seeing red at this traffic light in Dresden – and it's been that way for 25 years! Does that sound insane to you? It is! But there's a reason behind it ...

In this video, Alina takes us on a tour of some famous places and buildings in Zurich — and tells us some interesting facts about them and about the city itself.

The cold weather and a shortage of food eventually drove the Neanderthals to extinction, clearing the stage for Cro-Magnons, our direct ancestors. But you'll have to wait for the next episode to find out more about that!

Housework can also be fun, and Eylin tells us what she does to make this the case. Even though there are a few things she doesn't like doing, she still prefers cleaning her house herself.

Do you love gemstones and minerals? Then check out this video, where Eylin gives you fascinating info about all kinds of semi-precious stones.

A long afternoon lies ahead for Nick and Adalbert, and they really don't have much in common. Will they find something fun to do? Adalbert already has an idea, which at first seems rather daunting...

Sascha rises from the dead, and suddenly discovers his commitment to nurturing young talent. He and Jan Böhmermann might be teaming up! Meanwhile, Dr. Wolter reveals to Billie why she envies her.